Redacted

-~~~Enel LITTLEVILLE POWER COMPANY INC

~r A SUBSIDIARY OF ENEL GREEN POWER NORTH AMERICA INC

Green Power Enel Green Power North America Inc

One Tech Drive Suite 220 July 10 2013 Andover Massachusetts USA 01810 T 978 681 1900 F 978 681 7727

Re Glendale Hydroelectric Project (FERC No 2801-MA) Minimum Flow Powerhouse - Revised Intake Design Update

Dear Addressee

In 2011 Littleville Power Company Inc (LPC) received local state and federal approvals (list attached) for recreational access improvements and minimum flow turbine installation at its Glendale Hydroelectric Project located on the Housatonic River in Stockbridge Massachusetts Both projects were authorized in the Federal Energy Regulatory Commissions (FERC) 2009 new operating license for the Glendale Project After completing the recreation upgrades LPC received extremely high construction bids for the new turbine A major factor in construction cost was the proposed coffering and dredging (over 1000 cubic yards) of PCB-contaminated river sediment upstream of the dam Consequently LPC postponed construction of the minimum flow unit toJ explore options for reducing construction cost

To avoid the expense of dredging and disposal and to eliminate the need for a cofferdam in the impoundment LPC has developed an alternative intake configuration in which the minimum flow unit would draw water from the main power canal instead of through the waste gates This minor modification to the project results in significant reduction in dredge volume of PCB-impacted sediment The savings in construction costs and time are more in line with the projects overall financial goals All other aspects of the approved powerhouse design would remain unchanged

LPC is presently finalizing the engineering details of new intake design for FERC approval 1

Pursuant to the consultation requirements of its license LPC submitted proposed intake and trashrack design modifications to the MDEP the MDFW and the USFWS for their review and comment All three agencies approved the proposed changes to the trashrack design and location Pending FERCs approval on-site construction is anticipated to commence in July 2013 with unit commissioning scheduled to occur by December 31 2013

Construction of the canal intake and installation of the trashracks will be accomplished in the dry with the canal dewatered An impoundment drawdown will not be necessary to facilitate any construction activities There will be no change to the construction of the new powerhouse which will be built within a cofferdam downstream of the gatehouse structure

Construction activities (cofferdam dredging spoils treatment and disposal etc) ill areas upstream of the dam will not be necessary This approach will result in substantially less disturbance and impact to the sediment and waterway upstream of the dam Revised construction drawings depicting elimination of the upstream cofferdam and intake relocation are attached

1 In addition to revised intake designs submissions to FERC for this project include Contract Plans and Specifications a Quality Control and Inspection Program (QCIP) a Temporary Construction Emergency Action Plan (TCEAP a Soil Erosion and Sediment Control Plan and Powerhouse stability calculations

Glendale Project (PERC No 2801-MA) July 10 2013 Minimum Flow Powerhouse - Revised Intake Design Page 2

LPC will provide additional information closer to construction per requirements in your approval Please do not hesitate to contact me at (978) 681-1900 extension 808 if you have any questions concerning this update

Sincerely

Littleville Power Company Inc

~~~ Skip Medford Regulatory Specialist

Attachments List of construction approvals Revised construction drawings Distribution list

cc R Bartlett LPC K Webb LPC H van Lingen LPC D Sleeper LPC J Schott LPC

APPROVAL LIST

APPROVAL DATE AGENCY Order of Conditions DEP File 296-0391

May 10 2011 Town of Stockbridge Conservation Commission

Special Permit May 23 2011 Town of Stockbridge Board of Selectmen

Water Quality Certificate 401 WQC Transmittal No X238997

October 3 2011 MA DEP Wetlands and Waterways Program

Ch 91 License Waterways License No 13124

August 18 2011 MA DEP Waterways Program

Category 1 Massachusetts General Permit NAE-2011-00697

June 15 2011 US Army Corps of Engineers

~ ONCRETE WASHOUTS I I ~ Co1- ~(9~6 PROVIDE SELF-INSTALLED OR PREFABRICATED CONCRETE WASHOUl

EXISfbull CONCRETE All I 6gt~~Jt-( lta lt FACILITIES AT LOCATIONS ACCESSIBLE BY CONCRETE TRUCKS

1 ( 2 CONCRETE WASHOUTS ARE USED TO CONTAIN CONCRETE AND LIQUIDS

WHEN THE CHUTES OF CONCRETE MIXERS ANO HOPPERS OF CONCRETE PUMPS ARE RINSED OUT AFTER DELIVERY THE WASHOUT FACILITIES

1 CO~SOLIDATE SOLIDS FOR E~SIER DISPOSAL AtgtID PREVENT RUNOFF OF MAINTAIN FLOW THROUGH LIQUIDS

EXI~~~~~ _ (i EXISTING SLUICEWAY 3 CONCRETE WASHOUTS SHALL BE WATERTIGHT TO PREVENT CONCRETE WASH ~--------- f WATER FROM DISCHARGING INTO THE GROUND OR AOJACHIT WATERBODIES

4 00 NOT PLACE CONCRETE WASHOUT FACILITIES WITHIN 50 FEET OF STORM DRAINS OPEN DITCHES OR WATERBODIES

STRUC6~~~~R~ONgi I~E~~~~~A~~ I 5]middot rf WOODEN GATE HOUSE -- gt ~~~

5 CHECK All CONCRETE WASHOUT FACIUTIES PRIOR TO EVERY CONCRETE j D g~~ DELIVERY TO DETERIAINE IF THEY HAVE BEEN FILLED TO 75 PERCENT

CAPACilY IF CONCRffi WASHOUT IS FILLED TO 757 CAPACITY REMOVE - ~~~RIAL PRIOR TO THE DELIVERY OF ANY ADDITIONAL CONCRETE TO THEJ-J~ I I

-- y-~69~~ 6 CONCRETE WASHOUTS ARE DESIGNED TO PROIIOTE EVAPORATION WHERE

FEASIBLE HOWEVER IF STORED LIQUIDS HAVE NOT EVAPORATED AND THE WASHOUT IS NEARING CAPACilY VACUUM AND DISPOSE OF THEM IN AN

hs- a l A A I ~19o_r 04 1JLVV ~ 0 I APPROVED JVNNER - CHECK WITH THE LOCAL SANITARY SEWER AUTHORITY

TO DETERM11~pound IF THERE ARE SPECIAL DISPOSAL REQUIREMENTS FOR CONCRETE WASH WATER RD-lOVE LIQUIDS OR COVER THE STRUCTURES BEFORE PREDICTED RAINSTORMS TO PREVENT OVERflOWS~~rA ~ti middot EXI~~~t~---4--- __ft_____ I

17 REMOVE HARDENED SOUOS AND DISPOSE OF OFFSITE EXIST 12 R CP EXISTING GATE OPERATORS TO REMAIN J(t906 ~- I i I

INV = 79535 V~ -Q I f gt-- DEWATERING NOTES

gt I I gt ~~ I I I j CONTRACTOR SHALL PROVIDE SUFFICIENT PUMPING CAPACilY AND STANDBY CAPACITY TO HANDLE COFFERDAM LEAKAGE AND SURFACE RUNOFF INTO THE WORK AREA

-7r=--7--------=~~~~~~~~it~s~gt~ ~ lt9+ 0~~ i 4 6 0f1(~~gt I c~ lt9 OS amp I - bull j

I F~gtgtlt~ltlt--~lt~gt~ IPlt9 j (~Q ~ ~---~~ ~ gt9 _Jl A - ~I I 2 ALL WATER PUMPED FROM THE WORK AREA SHALL BE DISCHIIRGm INTO R REMOVE CONCRETE CANAL WALL------ltltgt_-gtgt~gt~ 1t l- ~ g ~ o-~lt~gt I 1 A()Ipound1~bullcL ~middotgt APPROVED SEDIIIENTATlOI CONTROL fACILITIES BEFORE BEING DISCHA~GED

~ -- --- -middot-- ----middot---- --- rlt~~~~ltgt~lt~lt~~~~lt~gt~ ho ~ 0-ltc EXIST CONCRETE WALL

~v----shy9~

~ ~

nlt~

~~

secta ~~ ~EFER TO DEWATERING~~ NOTES~ FOR DEWATERING i~ BEHIND COFFERDAM

~~

~ ~~I ~-- r 5T~~~~ETiND5sect ~RETAINING WALL

middot middot I Jj~v (~ ~o ov i~i middot --middot ~~ L~--~- middot -- -- middot-- middotJ ~ ~ f-o---o

~sect ~

~i ffi~ ~i COFFERDAM DESIGN AND

CONSTRUCTION BYg CONTRACTOR EXTEND TO END Of CONCRETE RETAINING WALL ~~

~~

I ~~ ~ o ~ r CD ~~~~~~- SITE PLAN

SCALE 14 ~ 1-0

~ ~ s ~ ~

Vl

INTO THE RIVER

3 AT A MINIMUIA All PUMPED DISCHARGES WILL BE DISCHARGED THROUGH AN APPROVED SEOIIAENTATION CONTROL OEVICE CONSISTING OF A

L_gt9 t ~r r ~1)~ SEDIMENTATION BASIN OR FILTER BAG LAID ON A LAYER Of STRAW

4 SEDIMENTATION CONTROL OEVICES SHALL BE OF SUFFlCIENT CAPACIJY AND SHALL BE CLEANED OR REPLACED AS NEEDED OR WHEN DIRECTED BY THE OWNER

5 DISCHARGE FROM SEDIMENT CONTROL DEVICES SHALL BE DIRECTED WITt-tiN AREAS ENCLOSED BY TURBIDITY CURTAINS

6 FILTER BAGS SHALL BE DIRTBAG PUMPED-SILT CONTROL SYSTEM ACF ENVlRONMENTAL RICHIONO VA (BOO) 448-3636 OR DANCY DEWATERING BAG BY AS MANUFACTURED BY DANDY PRODUCTS INC PO BOX 1980 WESTERVILLE OH 43086 (BOO) 591-2284 OR APPROVED EQUAL

7 CONTRACTOR SHAll COMPLY WITH ALL REQUIREMENTS Of TCEAP AND QCIP ANO ALL OTHER APPLICABLE PERMITSs-~gt

- o_ 1gt-~

~

11

~~~11 A1- I IUA~IfC T fA~IAI fAT~UIAII MMMbull shy0 I DRAFT FOR BIDDING MMMbull bull

ISSUE I DESCRIPTION BY I APP

DRAWN BY KMMMMM

CHECKED BY APPROVED BY

PROJECT NO 1590 DATE 051222013

LEGEND

DRILL UOLE

ltt CENTER LINE

~ EDGE OF RIVER PAINTED LINES

1 CONTOUR LINE 5 CONTOUR UNE OVER HEAD WIRE

fgt-gtlt-J COFFERDAM~

GLENDALE HYDRO STOCKBRIDGE MA

GLENDALE DAM MIN FLOW POWERHOUSE

LITTLEVJLLE POWER COMPANY INC C0

~~~ ~Eif~~~~middot~EowerNorth America

EXISTING SITE MAP AND EROSION AND SEDIMENT

CONTROL

GOMEZ AND SULLIVAN ~ FliJinxrsfC middot

2G8 G(ll~~ Sbcct -II Libcrty Rd Bl~ I jG~D )l~iu SliceI Ulic~ NV 1350 1~unit~r NB OJH2 WiHikmtviU~ NV 1421 (315) il-1-lSiiU (60~)-l~amp-1gt60 (716J2jO~QiiiJ

SCALE AS NOTED I DRAWING NO

~ l 4~1 12shy

2

Glendale Project (PERC No 2801-MA) July 10 2013 Minimum Flow Powerhouse - Revised Intake Design Page 2

LPC will provide additional information closer to construction per requirements in your approval Please do not hesitate to contact me at (978) 681-1900 extension 808 if you have any questions concerning this update

Sincerely

Littleville Power Company Inc

~~~ Skip Medford Regulatory Specialist

Attachments List of construction approvals Revised construction drawings Distribution list

cc R Bartlett LPC K Webb LPC H van Lingen LPC D Sleeper LPC J Schott LPC

APPROVAL LIST

APPROVAL DATE AGENCY Order of Conditions DEP File 296-0391

May 10 2011 Town of Stockbridge Conservation Commission

Special Permit May 23 2011 Town of Stockbridge Board of Selectmen

Water Quality Certificate 401 WQC Transmittal No X238997

October 3 2011 MA DEP Wetlands and Waterways Program

Ch 91 License Waterways License No 13124

August 18 2011 MA DEP Waterways Program

Category 1 Massachusetts General Permit NAE-2011-00697

June 15 2011 US Army Corps of Engineers

~ ONCRETE WASHOUTS I I ~ Co1- ~(9~6 PROVIDE SELF-INSTALLED OR PREFABRICATED CONCRETE WASHOUl

EXISfbull CONCRETE All I 6gt~~Jt-( lta lt FACILITIES AT LOCATIONS ACCESSIBLE BY CONCRETE TRUCKS

1 ( 2 CONCRETE WASHOUTS ARE USED TO CONTAIN CONCRETE AND LIQUIDS

WHEN THE CHUTES OF CONCRETE MIXERS ANO HOPPERS OF CONCRETE PUMPS ARE RINSED OUT AFTER DELIVERY THE WASHOUT FACILITIES

1 CO~SOLIDATE SOLIDS FOR E~SIER DISPOSAL AtgtID PREVENT RUNOFF OF MAINTAIN FLOW THROUGH LIQUIDS

EXI~~~~~ _ (i EXISTING SLUICEWAY 3 CONCRETE WASHOUTS SHALL BE WATERTIGHT TO PREVENT CONCRETE WASH ~--------- f WATER FROM DISCHARGING INTO THE GROUND OR AOJACHIT WATERBODIES

4 00 NOT PLACE CONCRETE WASHOUT FACILITIES WITHIN 50 FEET OF STORM DRAINS OPEN DITCHES OR WATERBODIES

STRUC6~~~~R~ONgi I~E~~~~~A~~ I 5]middot rf WOODEN GATE HOUSE -- gt ~~~

5 CHECK All CONCRETE WASHOUT FACIUTIES PRIOR TO EVERY CONCRETE j D g~~ DELIVERY TO DETERIAINE IF THEY HAVE BEEN FILLED TO 75 PERCENT

CAPACilY IF CONCRffi WASHOUT IS FILLED TO 757 CAPACITY REMOVE - ~~~RIAL PRIOR TO THE DELIVERY OF ANY ADDITIONAL CONCRETE TO THEJ-J~ I I

-- y-~69~~ 6 CONCRETE WASHOUTS ARE DESIGNED TO PROIIOTE EVAPORATION WHERE

FEASIBLE HOWEVER IF STORED LIQUIDS HAVE NOT EVAPORATED AND THE WASHOUT IS NEARING CAPACilY VACUUM AND DISPOSE OF THEM IN AN

hs- a l A A I ~19o_r 04 1JLVV ~ 0 I APPROVED JVNNER - CHECK WITH THE LOCAL SANITARY SEWER AUTHORITY

TO DETERM11~pound IF THERE ARE SPECIAL DISPOSAL REQUIREMENTS FOR CONCRETE WASH WATER RD-lOVE LIQUIDS OR COVER THE STRUCTURES BEFORE PREDICTED RAINSTORMS TO PREVENT OVERflOWS~~rA ~ti middot EXI~~~t~---4--- __ft_____ I

17 REMOVE HARDENED SOUOS AND DISPOSE OF OFFSITE EXIST 12 R CP EXISTING GATE OPERATORS TO REMAIN J(t906 ~- I i I

INV = 79535 V~ -Q I f gt-- DEWATERING NOTES

gt I I gt ~~ I I I j CONTRACTOR SHALL PROVIDE SUFFICIENT PUMPING CAPACilY AND STANDBY CAPACITY TO HANDLE COFFERDAM LEAKAGE AND SURFACE RUNOFF INTO THE WORK AREA

-7r=--7--------=~~~~~~~~it~s~gt~ ~ lt9+ 0~~ i 4 6 0f1(~~gt I c~ lt9 OS amp I - bull j

I F~gtgtlt~ltlt--~lt~gt~ IPlt9 j (~Q ~ ~---~~ ~ gt9 _Jl A - ~I I 2 ALL WATER PUMPED FROM THE WORK AREA SHALL BE DISCHIIRGm INTO R REMOVE CONCRETE CANAL WALL------ltltgt_-gtgt~gt~ 1t l- ~ g ~ o-~lt~gt I 1 A()Ipound1~bullcL ~middotgt APPROVED SEDIIIENTATlOI CONTROL fACILITIES BEFORE BEING DISCHA~GED

~ -- --- -middot-- ----middot---- --- rlt~~~~ltgt~lt~lt~~~~lt~gt~ ho ~ 0-ltc EXIST CONCRETE WALL

~v----shy9~

~ ~

nlt~

~~

secta ~~ ~EFER TO DEWATERING~~ NOTES~ FOR DEWATERING i~ BEHIND COFFERDAM

~~

~ ~~I ~-- r 5T~~~~ETiND5sect ~RETAINING WALL

middot middot I Jj~v (~ ~o ov i~i middot --middot ~~ L~--~- middot -- -- middot-- middotJ ~ ~ f-o---o

~sect ~

~i ffi~ ~i COFFERDAM DESIGN AND

CONSTRUCTION BYg CONTRACTOR EXTEND TO END Of CONCRETE RETAINING WALL ~~

~~

I ~~ ~ o ~ r CD ~~~~~~- SITE PLAN

SCALE 14 ~ 1-0

~ ~ s ~ ~

Vl

INTO THE RIVER

3 AT A MINIMUIA All PUMPED DISCHARGES WILL BE DISCHARGED THROUGH AN APPROVED SEOIIAENTATION CONTROL OEVICE CONSISTING OF A

L_gt9 t ~r r ~1)~ SEDIMENTATION BASIN OR FILTER BAG LAID ON A LAYER Of STRAW

4 SEDIMENTATION CONTROL OEVICES SHALL BE OF SUFFlCIENT CAPACIJY AND SHALL BE CLEANED OR REPLACED AS NEEDED OR WHEN DIRECTED BY THE OWNER

5 DISCHARGE FROM SEDIMENT CONTROL DEVICES SHALL BE DIRECTED WITt-tiN AREAS ENCLOSED BY TURBIDITY CURTAINS

6 FILTER BAGS SHALL BE DIRTBAG PUMPED-SILT CONTROL SYSTEM ACF ENVlRONMENTAL RICHIONO VA (BOO) 448-3636 OR DANCY DEWATERING BAG BY AS MANUFACTURED BY DANDY PRODUCTS INC PO BOX 1980 WESTERVILLE OH 43086 (BOO) 591-2284 OR APPROVED EQUAL

7 CONTRACTOR SHAll COMPLY WITH ALL REQUIREMENTS Of TCEAP AND QCIP ANO ALL OTHER APPLICABLE PERMITSs-~gt

- o_ 1gt-~

~

11

~~~11 A1- I IUA~IfC T fA~IAI fAT~UIAII MMMbull shy0 I DRAFT FOR BIDDING MMMbull bull

ISSUE I DESCRIPTION BY I APP

DRAWN BY KMMMMM

CHECKED BY APPROVED BY

PROJECT NO 1590 DATE 051222013

LEGEND

DRILL UOLE

ltt CENTER LINE

~ EDGE OF RIVER PAINTED LINES

1 CONTOUR LINE 5 CONTOUR UNE OVER HEAD WIRE

fgt-gtlt-J COFFERDAM~

GLENDALE HYDRO STOCKBRIDGE MA

GLENDALE DAM MIN FLOW POWERHOUSE

LITTLEVJLLE POWER COMPANY INC C0

~~~ ~Eif~~~~middot~EowerNorth America

EXISTING SITE MAP AND EROSION AND SEDIMENT

CONTROL

GOMEZ AND SULLIVAN ~ FliJinxrsfC middot

2G8 G(ll~~ Sbcct -II Libcrty Rd Bl~ I jG~D )l~iu SliceI Ulic~ NV 1350 1~unit~r NB OJH2 WiHikmtviU~ NV 1421 (315) il-1-lSiiU (60~)-l~amp-1gt60 (716J2jO~QiiiJ

SCALE AS NOTED I DRAWING NO

~ l 4~1 12shy

2

APPROVAL LIST

APPROVAL DATE AGENCY Order of Conditions DEP File 296-0391

May 10 2011 Town of Stockbridge Conservation Commission

Special Permit May 23 2011 Town of Stockbridge Board of Selectmen

Water Quality Certificate 401 WQC Transmittal No X238997

October 3 2011 MA DEP Wetlands and Waterways Program

Ch 91 License Waterways License No 13124

August 18 2011 MA DEP Waterways Program

Category 1 Massachusetts General Permit NAE-2011-00697

June 15 2011 US Army Corps of Engineers

~ ONCRETE WASHOUTS I I ~ Co1- ~(9~6 PROVIDE SELF-INSTALLED OR PREFABRICATED CONCRETE WASHOUl

EXISfbull CONCRETE All I 6gt~~Jt-( lta lt FACILITIES AT LOCATIONS ACCESSIBLE BY CONCRETE TRUCKS

1 ( 2 CONCRETE WASHOUTS ARE USED TO CONTAIN CONCRETE AND LIQUIDS

WHEN THE CHUTES OF CONCRETE MIXERS ANO HOPPERS OF CONCRETE PUMPS ARE RINSED OUT AFTER DELIVERY THE WASHOUT FACILITIES

1 CO~SOLIDATE SOLIDS FOR E~SIER DISPOSAL AtgtID PREVENT RUNOFF OF MAINTAIN FLOW THROUGH LIQUIDS

EXI~~~~~ _ (i EXISTING SLUICEWAY 3 CONCRETE WASHOUTS SHALL BE WATERTIGHT TO PREVENT CONCRETE WASH ~--------- f WATER FROM DISCHARGING INTO THE GROUND OR AOJACHIT WATERBODIES

4 00 NOT PLACE CONCRETE WASHOUT FACILITIES WITHIN 50 FEET OF STORM DRAINS OPEN DITCHES OR WATERBODIES

STRUC6~~~~R~ONgi I~E~~~~~A~~ I 5]middot rf WOODEN GATE HOUSE -- gt ~~~

5 CHECK All CONCRETE WASHOUT FACIUTIES PRIOR TO EVERY CONCRETE j D g~~ DELIVERY TO DETERIAINE IF THEY HAVE BEEN FILLED TO 75 PERCENT

CAPACilY IF CONCRffi WASHOUT IS FILLED TO 757 CAPACITY REMOVE - ~~~RIAL PRIOR TO THE DELIVERY OF ANY ADDITIONAL CONCRETE TO THEJ-J~ I I

-- y-~69~~ 6 CONCRETE WASHOUTS ARE DESIGNED TO PROIIOTE EVAPORATION WHERE

FEASIBLE HOWEVER IF STORED LIQUIDS HAVE NOT EVAPORATED AND THE WASHOUT IS NEARING CAPACilY VACUUM AND DISPOSE OF THEM IN AN

hs- a l A A I ~19o_r 04 1JLVV ~ 0 I APPROVED JVNNER - CHECK WITH THE LOCAL SANITARY SEWER AUTHORITY

TO DETERM11~pound IF THERE ARE SPECIAL DISPOSAL REQUIREMENTS FOR CONCRETE WASH WATER RD-lOVE LIQUIDS OR COVER THE STRUCTURES BEFORE PREDICTED RAINSTORMS TO PREVENT OVERflOWS~~rA ~ti middot EXI~~~t~---4--- __ft_____ I

17 REMOVE HARDENED SOUOS AND DISPOSE OF OFFSITE EXIST 12 R CP EXISTING GATE OPERATORS TO REMAIN J(t906 ~- I i I

INV = 79535 V~ -Q I f gt-- DEWATERING NOTES

gt I I gt ~~ I I I j CONTRACTOR SHALL PROVIDE SUFFICIENT PUMPING CAPACilY AND STANDBY CAPACITY TO HANDLE COFFERDAM LEAKAGE AND SURFACE RUNOFF INTO THE WORK AREA

-7r=--7--------=~~~~~~~~it~s~gt~ ~ lt9+ 0~~ i 4 6 0f1(~~gt I c~ lt9 OS amp I - bull j

I F~gtgtlt~ltlt--~lt~gt~ IPlt9 j (~Q ~ ~---~~ ~ gt9 _Jl A - ~I I 2 ALL WATER PUMPED FROM THE WORK AREA SHALL BE DISCHIIRGm INTO R REMOVE CONCRETE CANAL WALL------ltltgt_-gtgt~gt~ 1t l- ~ g ~ o-~lt~gt I 1 A()Ipound1~bullcL ~middotgt APPROVED SEDIIIENTATlOI CONTROL fACILITIES BEFORE BEING DISCHA~GED

~ -- --- -middot-- ----middot---- --- rlt~~~~ltgt~lt~lt~~~~lt~gt~ ho ~ 0-ltc EXIST CONCRETE WALL

~v----shy9~

~ ~

nlt~

~~

secta ~~ ~EFER TO DEWATERING~~ NOTES~ FOR DEWATERING i~ BEHIND COFFERDAM

~~

~ ~~I ~-- r 5T~~~~ETiND5sect ~RETAINING WALL

middot middot I Jj~v (~ ~o ov i~i middot --middot ~~ L~--~- middot -- -- middot-- middotJ ~ ~ f-o---o

~sect ~

~i ffi~ ~i COFFERDAM DESIGN AND

CONSTRUCTION BYg CONTRACTOR EXTEND TO END Of CONCRETE RETAINING WALL ~~

~~

I ~~ ~ o ~ r CD ~~~~~~- SITE PLAN

SCALE 14 ~ 1-0

~ ~ s ~ ~

Vl

INTO THE RIVER

3 AT A MINIMUIA All PUMPED DISCHARGES WILL BE DISCHARGED THROUGH AN APPROVED SEOIIAENTATION CONTROL OEVICE CONSISTING OF A

L_gt9 t ~r r ~1)~ SEDIMENTATION BASIN OR FILTER BAG LAID ON A LAYER Of STRAW

4 SEDIMENTATION CONTROL OEVICES SHALL BE OF SUFFlCIENT CAPACIJY AND SHALL BE CLEANED OR REPLACED AS NEEDED OR WHEN DIRECTED BY THE OWNER

5 DISCHARGE FROM SEDIMENT CONTROL DEVICES SHALL BE DIRECTED WITt-tiN AREAS ENCLOSED BY TURBIDITY CURTAINS

6 FILTER BAGS SHALL BE DIRTBAG PUMPED-SILT CONTROL SYSTEM ACF ENVlRONMENTAL RICHIONO VA (BOO) 448-3636 OR DANCY DEWATERING BAG BY AS MANUFACTURED BY DANDY PRODUCTS INC PO BOX 1980 WESTERVILLE OH 43086 (BOO) 591-2284 OR APPROVED EQUAL

7 CONTRACTOR SHAll COMPLY WITH ALL REQUIREMENTS Of TCEAP AND QCIP ANO ALL OTHER APPLICABLE PERMITSs-~gt

- o_ 1gt-~

~

11

~~~11 A1- I IUA~IfC T fA~IAI fAT~UIAII MMMbull shy0 I DRAFT FOR BIDDING MMMbull bull

ISSUE I DESCRIPTION BY I APP

DRAWN BY KMMMMM

CHECKED BY APPROVED BY

PROJECT NO 1590 DATE 051222013

LEGEND

DRILL UOLE

ltt CENTER LINE

~ EDGE OF RIVER PAINTED LINES

1 CONTOUR LINE 5 CONTOUR UNE OVER HEAD WIRE

fgt-gtlt-J COFFERDAM~

GLENDALE HYDRO STOCKBRIDGE MA

GLENDALE DAM MIN FLOW POWERHOUSE

LITTLEVJLLE POWER COMPANY INC C0

~~~ ~Eif~~~~middot~EowerNorth America

EXISTING SITE MAP AND EROSION AND SEDIMENT

CONTROL

GOMEZ AND SULLIVAN ~ FliJinxrsfC middot

2G8 G(ll~~ Sbcct -II Libcrty Rd Bl~ I jG~D )l~iu SliceI Ulic~ NV 1350 1~unit~r NB OJH2 WiHikmtviU~ NV 1421 (315) il-1-lSiiU (60~)-l~amp-1gt60 (716J2jO~QiiiJ

SCALE AS NOTED I DRAWING NO

~ l 4~1 12shy

2

~ ONCRETE WASHOUTS I I ~ Co1- ~(9~6 PROVIDE SELF-INSTALLED OR PREFABRICATED CONCRETE WASHOUl

EXISfbull CONCRETE All I 6gt~~Jt-( lta lt FACILITIES AT LOCATIONS ACCESSIBLE BY CONCRETE TRUCKS

1 ( 2 CONCRETE WASHOUTS ARE USED TO CONTAIN CONCRETE AND LIQUIDS

WHEN THE CHUTES OF CONCRETE MIXERS ANO HOPPERS OF CONCRETE PUMPS ARE RINSED OUT AFTER DELIVERY THE WASHOUT FACILITIES

1 CO~SOLIDATE SOLIDS FOR E~SIER DISPOSAL AtgtID PREVENT RUNOFF OF MAINTAIN FLOW THROUGH LIQUIDS

EXI~~~~~ _ (i EXISTING SLUICEWAY 3 CONCRETE WASHOUTS SHALL BE WATERTIGHT TO PREVENT CONCRETE WASH ~--------- f WATER FROM DISCHARGING INTO THE GROUND OR AOJACHIT WATERBODIES

4 00 NOT PLACE CONCRETE WASHOUT FACILITIES WITHIN 50 FEET OF STORM DRAINS OPEN DITCHES OR WATERBODIES

STRUC6~~~~R~ONgi I~E~~~~~A~~ I 5]middot rf WOODEN GATE HOUSE -- gt ~~~

5 CHECK All CONCRETE WASHOUT FACIUTIES PRIOR TO EVERY CONCRETE j D g~~ DELIVERY TO DETERIAINE IF THEY HAVE BEEN FILLED TO 75 PERCENT

CAPACilY IF CONCRffi WASHOUT IS FILLED TO 757 CAPACITY REMOVE - ~~~RIAL PRIOR TO THE DELIVERY OF ANY ADDITIONAL CONCRETE TO THEJ-J~ I I

-- y-~69~~ 6 CONCRETE WASHOUTS ARE DESIGNED TO PROIIOTE EVAPORATION WHERE

FEASIBLE HOWEVER IF STORED LIQUIDS HAVE NOT EVAPORATED AND THE WASHOUT IS NEARING CAPACilY VACUUM AND DISPOSE OF THEM IN AN

hs- a l A A I ~19o_r 04 1JLVV ~ 0 I APPROVED JVNNER - CHECK WITH THE LOCAL SANITARY SEWER AUTHORITY

TO DETERM11~pound IF THERE ARE SPECIAL DISPOSAL REQUIREMENTS FOR CONCRETE WASH WATER RD-lOVE LIQUIDS OR COVER THE STRUCTURES BEFORE PREDICTED RAINSTORMS TO PREVENT OVERflOWS~~rA ~ti middot EXI~~~t~---4--- __ft_____ I

17 REMOVE HARDENED SOUOS AND DISPOSE OF OFFSITE EXIST 12 R CP EXISTING GATE OPERATORS TO REMAIN J(t906 ~- I i I

INV = 79535 V~ -Q I f gt-- DEWATERING NOTES

gt I I gt ~~ I I I j CONTRACTOR SHALL PROVIDE SUFFICIENT PUMPING CAPACilY AND STANDBY CAPACITY TO HANDLE COFFERDAM LEAKAGE AND SURFACE RUNOFF INTO THE WORK AREA

-7r=--7--------=~~~~~~~~it~s~gt~ ~ lt9+ 0~~ i 4 6 0f1(~~gt I c~ lt9 OS amp I - bull j

I F~gtgtlt~ltlt--~lt~gt~ IPlt9 j (~Q ~ ~---~~ ~ gt9 _Jl A - ~I I 2 ALL WATER PUMPED FROM THE WORK AREA SHALL BE DISCHIIRGm INTO R REMOVE CONCRETE CANAL WALL------ltltgt_-gtgt~gt~ 1t l- ~ g ~ o-~lt~gt I 1 A()Ipound1~bullcL ~middotgt APPROVED SEDIIIENTATlOI CONTROL fACILITIES BEFORE BEING DISCHA~GED

~ -- --- -middot-- ----middot---- --- rlt~~~~ltgt~lt~lt~~~~lt~gt~ ho ~ 0-ltc EXIST CONCRETE WALL

~v----shy9~

~ ~

nlt~

~~

secta ~~ ~EFER TO DEWATERING~~ NOTES~ FOR DEWATERING i~ BEHIND COFFERDAM

~~

~ ~~I ~-- r 5T~~~~ETiND5sect ~RETAINING WALL

middot middot I Jj~v (~ ~o ov i~i middot --middot ~~ L~--~- middot -- -- middot-- middotJ ~ ~ f-o---o

~sect ~

~i ffi~ ~i COFFERDAM DESIGN AND

CONSTRUCTION BYg CONTRACTOR EXTEND TO END Of CONCRETE RETAINING WALL ~~

~~

I ~~ ~ o ~ r CD ~~~~~~- SITE PLAN

SCALE 14 ~ 1-0

~ ~ s ~ ~

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INTO THE RIVER

3 AT A MINIMUIA All PUMPED DISCHARGES WILL BE DISCHARGED THROUGH AN APPROVED SEOIIAENTATION CONTROL OEVICE CONSISTING OF A

L_gt9 t ~r r ~1)~ SEDIMENTATION BASIN OR FILTER BAG LAID ON A LAYER Of STRAW

4 SEDIMENTATION CONTROL OEVICES SHALL BE OF SUFFlCIENT CAPACIJY AND SHALL BE CLEANED OR REPLACED AS NEEDED OR WHEN DIRECTED BY THE OWNER

5 DISCHARGE FROM SEDIMENT CONTROL DEVICES SHALL BE DIRECTED WITt-tiN AREAS ENCLOSED BY TURBIDITY CURTAINS

6 FILTER BAGS SHALL BE DIRTBAG PUMPED-SILT CONTROL SYSTEM ACF ENVlRONMENTAL RICHIONO VA (BOO) 448-3636 OR DANCY DEWATERING BAG BY AS MANUFACTURED BY DANDY PRODUCTS INC PO BOX 1980 WESTERVILLE OH 43086 (BOO) 591-2284 OR APPROVED EQUAL

7 CONTRACTOR SHAll COMPLY WITH ALL REQUIREMENTS Of TCEAP AND QCIP ANO ALL OTHER APPLICABLE PERMITSs-~gt

- o_ 1gt-~

~

11

~~~11 A1- I IUA~IfC T fA~IAI fAT~UIAII MMMbull shy0 I DRAFT FOR BIDDING MMMbull bull

ISSUE I DESCRIPTION BY I APP

DRAWN BY KMMMMM

CHECKED BY APPROVED BY

PROJECT NO 1590 DATE 051222013

LEGEND

DRILL UOLE

ltt CENTER LINE

~ EDGE OF RIVER PAINTED LINES

1 CONTOUR LINE 5 CONTOUR UNE OVER HEAD WIRE

fgt-gtlt-J COFFERDAM~

GLENDALE HYDRO STOCKBRIDGE MA

GLENDALE DAM MIN FLOW POWERHOUSE

LITTLEVJLLE POWER COMPANY INC C0

~~~ ~Eif~~~~middot~EowerNorth America

EXISTING SITE MAP AND EROSION AND SEDIMENT

CONTROL

GOMEZ AND SULLIVAN ~ FliJinxrsfC middot

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SCALE AS NOTED I DRAWING NO

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EXIST 12bull CJP JNV = 79535

EXIST CONCRETE WALL

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LEGEND

DRILL HOLE

CENTER LINE

PAINTED LINES

CENTER LINE

1 CONTOUR LINE

5 CONTOUR liNE OVER HEAD WIRE DRAINAGE LINES

GLENDALE HYDRO STOCKBRIDGE MA

GLENDALE DAM MIN FLOW POWERHOUSE

LITTLEVILLE POWER COMPANY INC C0

~ sect~~~9pound~~Q fower North America

53

I I

j

DISTRIBUTION LIST

Sally Underwood-Miller Conservation Commission Town of Stockbridge 50 Main Street Stockbridge MA 01262

Jorja Ann P Marsden Board of Selectmen Town of Stockbridge 50 Main Street Stockbridge MA 01262

Jeremiah Mew MA Dept of Environmental Protection Waterways Program 436 Dwight Street Springfieldmiddot MA 01103

Alex Strysky MA Dept of Environmental Protection Wetlands and Waterways Program One Winter Street 5th Floor Boston MA 02108

Brian Valiton Department of the Army New England District Corps of Engineers 696 Virginia Road Concord MA 01742-2751

1. barcode 558604
2. barcodetext SDMS Doc ID 558604

j

DISTRIBUTION LIST

Sally Underwood-Miller Conservation Commission Town of Stockbridge 50 Main Street Stockbridge MA 01262

Jorja Ann P Marsden Board of Selectmen Town of Stockbridge 50 Main Street Stockbridge MA 01262

Jeremiah Mew MA Dept of Environmental Protection Waterways Program 436 Dwight Street Springfieldmiddot MA 01103

Alex Strysky MA Dept of Environmental Protection Wetlands and Waterways Program One Winter Street 5th Floor Boston MA 02108

Brian Valiton Department of the Army New England District Corps of Engineers 696 Virginia Road Concord MA 01742-2751

1. barcode 558604
2. barcodetext SDMS Doc ID 558604